CN111549954B - Plate lowering structure of box plate assembly type steel structure floor plate and manufacturing method - Google Patents
Plate lowering structure of box plate assembly type steel structure floor plate and manufacturing method Download PDFInfo
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- CN111549954B CN111549954B CN202010660252.2A CN202010660252A CN111549954B CN 111549954 B CN111549954 B CN 111549954B CN 202010660252 A CN202010660252 A CN 202010660252A CN 111549954 B CN111549954 B CN 111549954B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/43—Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating
Abstract
The invention provides a plate lowering structure of a box plate assembly type steel structure floor plate and a manufacturing method thereof. The plate descending structure form of the box plate assembly type steel structure floor plate provided by the invention can not only realize the purpose of plate descending, but also has the advantages of high bearing capacity, reliable connection, simple structure, convenience in installation and low cost, and can be widely applied to the box plate assembly type steel structure.
Description
Technical Field
The invention relates to the field of building structure engineering, in particular to a plate lowering structure of a box plate assembly type steel structure floor plate and a manufacturing method, and the plate lowering structure can be particularly applied to assembly type steel structure buildings.
Background
In recent years, the assembled steel structure has been greatly developed by virtue of its good earthquake resistance and construction convenience, and the box-plate assembled steel plate wall is one of them and widely used in super high-rise buildings. The design inspiration of the boxboard assembled steel structure comes from a structural system of a ship superstructure, is different from the design concept of a traditional steel plate wall, has no peripheral frame constraint, is mainly formed by combining stiffening ribs, steel plates and other components, and is a novel assembled steel structural system. Due to the structural particularity, the structural system bears the horizontal shearing force and the vertical load at the same time, and has the advantages of high bearing capacity, good ductility, strong energy consumption capacity and the like. In addition, the advantages of convenient construction, high construction efficiency and the like are also a great characteristic of the structural form.
In the case board assembled steel structure house, in order to prevent the water inflow main room of department such as bathroom, kitchen, need fall the board and handle to the floor in bathroom and kitchen, because this building adopts case board assembled steel structure system, the floor adopts the box steel sheet, how to realize the board effect that falls of this kind of novel structure system, and guarantee to fall the reliability of plate structure, is the big problem that this structure system used
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a plate lowering structure of a box plate assembly type steel structure floor plate and a manufacturing method thereof, which can not only realize the purpose of plate lowering, but also have high bearing capacity and reliable connection, the main structure can be prefabricated in a factory, the structure is simple, the installation is convenient, the cost is low, and the plate lowering structure can be widely applied to box plate assembly type steel structure houses.
The technical scheme of the invention is as follows:
the invention firstly provides a plate lowering structure of a box plate assembly type steel structure floor plate, which comprises the following components:
the floor slab is provided with a rectangular hole in a slab descending area, floor slab stiffening ribs are arranged on the bottom surface of the floor slab in a long way, and the floor slab stiffening ribs are cut off at the rectangular hole;
the first opening stiffening rib is arranged on the edges of two parallel edges of the rectangular opening on the bottom surface of the floor panel;
the second opening stiffening rib is a T-shaped stiffening rib and is arranged at the edges of the other two parallel edges of the rectangular opening on the bottom surface of the floor panel, a web plate of the second opening stiffening rib is welded and fixed with the bottom surface of the floor panel, and the inner side flange plate extends into the opening;
the first supporting piece is fixedly connected to the inner side flange plates of the two second hole stiffening ribs, and the upper surface of the first supporting piece is lower than that of the floor panel;
a second support fixedly connected to the web of the two second opening stiffeners, the upper surface of the second support being lower than the upper surface of the floor panel, and the second support being arranged alternately with the first support;
the floor plate in the floor-lowering area is in the same shape as the rectangular opening, is laid on the upper surfaces of the first supporting piece and the second supporting piece, and generates a height difference with the floor plate to form the floor-lowering area.
As a further improvement, the floor plate is of a thin steel plate structure, and the stiffening ribs of the floor plate are L-shaped and are distributed in parallel.
As a further improvement, the first hole stiffening ribs are arranged in a full length mode and also used as floor panel stiffening ribs, and the second hole stiffening ribs are arranged between the two first hole stiffening ribs and are consistent with the two corresponding parallel sides of the rectangular hole in length.
As a further improvement, the first hole stiffening rib is a T-shaped stiffening rib, a web plate of the first hole stiffening rib is welded and fixed with the bottom surface of the floor slab, and the inner side flange plate extends into the hole.
As a further refinement, the inner surfaces of the webs of the first and second aperture stiffeners are each aligned with the aperture edge.
As a further improvement, the first supporting piece is provided with a plurality of L-shaped stiffening ribs which are uniformly arranged in the length direction of the second opening stiffening ribs, and two ends of each L-shaped stiffening rib are respectively welded and fixed with the flange plates of the two second opening stiffening ribs.
As a further improvement, the second supporting piece is a plurality of channel steel small sections, the channel steel small sections are uniformly and symmetrically arranged on the two second hole stiffening ribs in the length direction of the second hole stiffening ribs, and two flanges of the channel steel small sections are welded and fixed with webs of the second hole stiffening ribs.
As a further improvement, the L-shaped stiffeners are arranged in one-to-one alignment with the floor panel stiffeners, and the floor panel stiffeners have a cross-sectional height greater than the L-shaped stiffeners.
As a further improvement, the cross-sectional heights of the first opening stiffening rib and the second opening stiffening rib are the same and are both larger than the cross-sectional heights of the L-shaped stiffening rib and the channel steel small section, and the cross-sectional heights of the L-shaped stiffening rib and the channel steel small section are the same.
The invention also provides a manufacturing method of the plate lowering structure of the box plate assembly type steel structure floor plate, which comprises the following steps:
s10: preparing a floor plate, and forming a rectangular hole in the floor plate according to the designed position and size;
s20: welding a first L-shaped stiffening rib on the bottom surface of the floor slab, and welding a first T-shaped stiffening rib on the edge of the opening at two opposite sides of the rectangular opening;
s30: welding second T-shaped stiffening ribs on the edges of the other two opposite sides of the rectangular opening on the bottom surface of the floor panel;
s40: arranging a plurality of second L-shaped stiffening ribs in one-to-one alignment with the first L-shaped stiffening ribs in the length direction of the second T-shaped stiffening ribs, and respectively welding and fixing two ends of each second L-shaped stiffening rib on the inner side flange plates of the two second T-shaped stiffening ribs;
s50: arranging a channel steel section between two adjacent second L-shaped stiffening ribs, and welding and fixing two flanges of the channel steel section on a web plate of the second T-shaped stiffening rib;
s60: and laying a floor slab of the plate lowering area on the channel steel small section and the second L-shaped stiffening rib, and welding and fixing the periphery of the floor slab with the first T-shaped stiffening rib and the second T-shaped stiffening rib to form the plate lowering area.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a plate descending structural form of a box plate assembly type steel structure floor plate, which can not only realize the aim of plate descending, but also has the advantages of high bearing capacity, reliable connection, simple structure, convenient installation and low cost, and can be widely applied to box plate assembly type steel structures. Specifically, at least the following practical effects are obtained:
(1) the L-shaped stiffening ribs are arranged below the floor slab, so that the overall supporting strength can be effectively improved without excessively increasing the height of the cross section;
(2) the L-shaped stiffening ribs of the plate lowering area are welded with the surrounding flange plates of the T-shaped stiffening ribs, the groove-shaped supporting members are welded with web plates of the T-shaped stiffening ribs, and the floor plates of the plate lowering area are welded with the web plates of the surrounding T-shaped stiffening ribs, so that the connection reliability of all parts of the plate lowering area is ensured;
(3) because the height of the section of the T-shaped stiffening rib at the edge of the plate lowering area is greater than that of other L-shaped stiffening ribs, the L-shaped stiffening rib and the groove-shaped supporting member of the plate lowering area are arranged on the flange plate and the web plate of the T-shaped stiffening rib, so that the height difference can be generated between the L-shaped stiffening rib and the surrounding floor plates, and the effective plate lowering effect is realized;
(4) the existence of the groove-shaped supporting member shares part of load transmitted to the flange plate of the T-shaped stiffening rib, improves the bearing capacity of the plate lowering area, provides effective supporting strength, saves the material consumption and reduces the self weight of the structure;
(5) the components used for lowering the plate are prefabricated, and only field assembly is needed, so that the plate is simple and convenient to install, the construction time is saved, the construction efficiency is greatly improved, and the plate can be widely applied to box plate assembly type steel structures;
(6) the plate descending structure form of the box plate assembly type steel structure is used for a house, the plate descending problem of a novel assembly type steel structure house is solved, and the application of the box plate assembly type steel structure is promoted simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic overall structure diagram of one embodiment of the present invention;
FIG. 2 is a bottom view of a blade lowering region of one embodiment of the present invention;
FIG. 3 is a lengthwise cross-sectional view of one embodiment of the present invention;
FIG. 4 is a widthwise cross-sectional view of one embodiment of the invention.
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. The meaning of the individual reference symbols in the figures is:
1-second support, 2 a-first support, 2 b-floor panel stiffener, 3 a-first opening stiffener, 3 b-second opening stiffener, 4 a-floor panel in the area of falling floor, 4 b-floor panel, 5-weld, 6-rectangular opening,h1-height difference.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
In the description of the present invention, it is to be understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.
It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present invention and to simplify description, and do not indicate or imply that the referenced device, component, or structure must have a particular orientation, be constructed in a particular orientation, or be operated in a particular manner, and should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 and 2, the present invention firstly provides a plate lowering structure for a box plate assembly type steel structure floor plate, which specifically comprises a floor plate 4b, a first hole stiffening rib 3a, a second hole stiffening rib 3b, a first support 2a, a second support 1 and a plate lowering area floor plate 4 a. Based on the components, the invention designs the plate lowering structure, can meet the requirements of high bearing capacity, reliable connection and convenient installation while achieving the plate lowering purpose, is used for areas needing plate lowering treatment on floor slabs such as kitchens, toilets and the like, and is widely popularized and applied in box plate assembly type steel structure houses. The specific structure and the structural relationship between the various components constituting the present invention will be described in detail below with reference to the accompanying drawings.
The floor slab 4b is provided with a rectangular hole 6 of a slab descending area, floor slab stiffening ribs 2b are arranged on the bottom surface of the floor slab in a long way, and the floor slab stiffening ribs 2b are cut off at the rectangular hole 6;
as a specific example, the floor panel 4b of the present invention is made of thin steel plate, and the floor panel stiffening ribs 2b are L-shaped stiffening ribs, and a plurality of L-shaped stiffening ribs are arranged in parallel. The thin steel plate structure not only meets the bearing requirement of the load thereon, but also is convenient for forming the opening thereon, and meanwhile, in order to ensure the strength and rigidity of the thin steel plate after the opening is formed, the floor plate stiffening rib is arranged below the thin steel plate structure. The L-shaped stiffening ribs are made of angle steel, so that the weight is relatively light, meanwhile, larger section inertia moment can be provided, and the requirements on section strength and bending rigidity are met.
The first hole stiffening ribs 3a are arranged on the edges of two parallel sides of the rectangular hole 6 on the bottom surface of the floor panel, as shown in fig. 1, the first hole stiffening ribs 3a are arranged on the edges of two short sides of the rectangular hole 6 along the width direction of the floor panel. Through setting up first entrance to a cave stiffening rib 3a, strengthen the regional floor board of two minor faces in entrance to a cave, overcome because set up the entrance to the influence of floor board bearing strength.
Referring to fig. 1, the first entrance stiffener 3a is arranged throughout, parallel to the floor stiffener 2b, and serves both as an entrance stiffener and a floor stiffener.
The second entrance stiffening rib 3b is a T-shaped stiffening rib and is arranged at the edges of the other two parallel edges of the rectangular entrance at the bottom surface of the floor panel, as shown in fig. 1, the second entrance stiffening rib 3b is arranged at the edges of the two long edges of the rectangular entrance 6 along the length direction of the floor panel, and the web plate thereof is welded and fixed with the bottom surface of the floor panel, and the inner flange plate extends into the entrance. Because the floor panel stiffening rib 2b cuts off at the rectangular opening 6, the strength of the floor panel at this position needs to be particularly strengthened by practical and effective means, and the edge of the opening plate is strengthened by using the T-shaped rib with larger section, higher strength and better stability, which is helpful for improving the safety guarantee rate.
With continued reference to fig. 3, as an example, the first opening stiffener 3a is also a T-shaped stiffener, the web of which is welded to the bottom surface of the floor slab, and the inner flange plate extends into the opening. The edge of the holed plate is reinforced by the T-shaped ribs with larger cross sections, higher strength and better stability, so that the safety guarantee rate is improved.
As an embodiment, the second opening stiffener 3b is disposed between two first opening stiffeners 3a, and has the same length as the two parallel sides of the rectangular opening, and besides the web is welded to the bottom surface of the floor slab, both ends can also be welded to the first opening stiffeners 3a, forming an integral quadrilateral stiffener around the rectangular opening.
Referring to fig. 3 and 4, the inner surfaces of the web plates of the first and second hole stiffening ribs 3a and 3b are arranged in alignment with the edge of the hole, so that the floor slab in the plate lowering area with the shape and size consistent with those of the rectangular hole can be conveniently placed in the rectangular hole, and the periphery of the floor slab in the plate lowering area can be ensured to be tightly welded and connected with the web plates of the T-shaped stiffening ribs near the hole.
The above is the reinforcement measure of the rectangular opening, and the support and reinforcement means of the floor panel in the floor-lowering area are explained continuously below.
A first support 2a fixedly connected to the inner side flange plates of the two second hole stiffening ribs 3 b;
the second supporting piece 1 is fixedly connected to the webs of the two second hole reinforcing ribs 3b and is arranged alternately with the first supporting piece;
as shown in fig. 3 and 4, the upper surfaces of the first support 2a and the second support 1 are lower than the upper surface of the floor panel 4b, so that a height difference h is generated between the floor panel 4a and the floor panel 4b in the floor lowering area1Thereby providing conditions for forming a drop panel construction.
The invention is provided with two groups of supporting pieces, and by means of the special structure of the T-shaped rib, one group of supporting pieces, namely the first supporting piece 2a, is fixedly connected with the flange plate of the T-shaped rib, the other group of supporting pieces, namely the second supporting piece 1, is fixedly connected with the web plate of the T-shaped rib, and the second supporting piece 1 shares part of load transmitted to the flange plate of the T-shaped stiffening rib, thereby improving the bearing capacity of a plate lowering area, and simultaneously, the floor panel of the plate lowering area is welded with the web plate of the stiffening rib of the surrounding opening, thereby ensuring the reliability of the connection of all parts of the plate lowering area.
The floor lowering area floor panel 4a is in the same shape as the rectangular opening and is laid on the upper surfaces of the first support member 2a and the second support member 1, and the floor lowering area floor panel 4a and the floor panel 4b have a height difference h1And a step-down region is formed, as shown in fig. 1.
With continued reference to fig. 1 and 4, as an embodiment, the first support 2a is a plurality of L-shaped stiffeners uniformly arranged in the rectangular opening, and two ends of the L-shaped stiffeners are respectively placed on the flange plates of the two second opening stiffeners 3b and welded and fixed with the flange plates.
The first support part 2a adopts the L-shaped stiffening ribs, the weight of the L-shaped ribs is relatively light, meanwhile, larger section inertia moment can be provided, and the support requirements on the floor slab in the floor-lowering area and the load used on the floor slab are met.
The L-shaped stiffening ribs are arranged in one-to-one alignment with the L-shaped stiffening ribs of the floor stiffening ribs, and the full-length integral stiffening ribs are formed at the bottom of the floor slab, so that the influence of opening on the strength of the floor slab is reduced to the greatest extent.
The present invention may be further designed such that the L-shaped stiffener section height of the floor panel stiffener 2b is greater than the L-shaped stiffener section height of the first support 2a, thus enhancing the overall stiffness of the drop floor area.
As a specific example, the first and second opening stiffeners 3a, 3b have the same cross-sectional height and are both greater than the cross-sectional height of the L-shaped stiffener of the first support 2a and the channel section of the second support 1, which are the same. Through the design, the cross section height of the T-shaped stiffening rib at the edge of the plate lowering area is greater than that of other L-shaped stiffening ribs, and when the plate lowering area places the L-shaped stiffening ribs and the channel steel small sections on the flange plates and the webs of the T-shaped stiffening ribs, the height difference between the L-shaped stiffening ribs and the web plates of the surrounding building can be generated, so that the effective plate lowering effect is realized.
The invention also relates to a manufacturing method of the plate descending structure of the box plate assembly type steel structure floor plate, and the channel steel small sections are formed by cutting channel steel and are manufactured in factories. The L-shaped stiffening ribs are made of angle steel. The T-shaped stiffening ribs are formed by welding thin steel plates and are machined in a factory. The floor slab is made of thin steel plates and is welded with the L-shaped stiffening ribs and the T-shaped stiffening ribs in a factory to form the stiffening steel plate with the dense ribs.
The specific installation method is as follows:
firstly, a rectangular opening is arranged on a floor panel according to the design position and size, a plurality of L-shaped stiffening ribs, namely floor panel stiffening ribs 2b, are arranged and welded on the bottom surface of the floor panel in parallel, a first opening stiffening rib 3a is welded on the opening edge of two opposite sides of the rectangular opening, and a second opening stiffening rib 3b is welded on the opening edge of the other two opposite sides; then, arranging L-shaped stiffening ribs, namely the first support part 2a, on the wing edge plates of T-shaped stiffening ribs, namely the second entrance stiffening ribs 3b, at the edges of the board descending region along the length direction of the board descending region, corresponding to the L-shaped stiffening ribs outside the board descending region, namely the floor panel stiffening ribs 2b one by one, and welding the arranged L-shaped stiffening ribs of the first support part 2a with the T-shaped stiffening ribs at the edges of the board descending region; then, arranging a channel steel small section between two adjacent L-shaped stiffening ribs, namely the first support 2a, in the plate lowering area, arranging and welding the channel steel small section on a web plate of a T-shaped stiffening rib, namely a second entrance stiffening rib 3b at the edge of the plate lowering area along the length direction of the plate lowering area according to a certain distance, wherein the height difference between the L-shaped stiffening ribs, namely the first support 2a or the channel steel small section, in the plate lowering area and the top surface of the floor slab is determined according to the actual floor lowering height, and the height difference is designed to be 200 mm; finally, the floor slab 4a in the floor-lowering area is arranged on the installed L-shaped stiffening ribs, namely the first support 2a and the channel steel small sections, and is welded with the web plate of the T-shaped stiffening rib at the edge of the floor-lowering area, and a height difference h is generated between the floor slab 4a and the floor slab 4b in other areas1And a safe and reliable board descending area is formed.
In conclusion, the plate lowering structural form of the box plate assembly type steel structure floor plate has the advantages of simple structure, convenience and quickness in construction, reliability in connection and low cost, can not only realize the safe and reliable plate lowering effect, but also meet the mechanical property requirement of the structure, and can be widely applied to the box plate assembly type steel structure. The plate lowering structure of the box plate assembly type steel structure house not only solves the plate lowering structure problem of the box plate assembly type steel structure house, but also promotes the application and development of the box plate assembly type steel structure house.
Thus, it should be understood by those skilled in the art that while exemplary embodiments of the present invention have been illustrated and described in detail herein, many other variations and modifications can be made, which are consistent with the principles of the invention, from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. The board structure that falls of boxboard assembled steel construction floor board, its characterized in that includes:
the floor slab is provided with a rectangular hole in a slab descending area, floor slab stiffening ribs are arranged on the bottom surface of the floor slab in a long way, and the floor slab stiffening ribs are cut off at the rectangular hole;
the first opening stiffening rib is arranged on the edges of two parallel edges of the rectangular opening on the bottom surface of the floor panel;
the second opening stiffening rib is a T-shaped stiffening rib and is arranged at the edges of the other two parallel edges of the rectangular opening on the bottom surface of the floor panel, a web plate of the second opening stiffening rib is welded and fixed with the bottom surface of the floor panel, and the inner side flange plate extends into the opening;
the first supporting piece is fixedly connected to the inner side flange plates of the two second hole stiffening ribs, and the upper surface of the first supporting piece is lower than that of the floor panel;
a second support fixedly connected to the web of the two second opening stiffeners, the upper surface of the second support being lower than the upper surface of the floor panel, and the second support being arranged alternately with the first support;
the floor plate in the floor-lowering area is in the same shape as the rectangular opening, is laid on the upper surfaces of the first supporting piece and the second supporting piece, and generates a height difference with the floor plate to form the floor-lowering area.
2. The lowering structure of a boxboard assembled steel structure floor slab as claimed in claim 1, wherein the floor slab is a thin steel slab structure, and the floor slab stiffening ribs are L-shaped and arranged in parallel.
3. The lowering plate structure of boxboard assembled steel structure floor slab as claimed in claim 2, wherein the first hole stiffening ribs are arranged throughout the length and also function as floor slab stiffening ribs, and the second hole stiffening ribs are arranged between two first hole stiffening ribs and have the same length as the corresponding two parallel sides of the rectangular hole.
4. The lowering plate structure of a boxboard assembled steel structure floor slab as claimed in claim 3, wherein the first entrance stiffener is a T-shaped stiffener, the web of which is welded to the bottom surface of the floor slab, and the inner flange plate extends into the entrance.
5. The drop plate construction of a boxboard assembled steel structural floor panel according to claim 4, wherein the inner surface of the web of each of the first and second hole stiffeners is aligned with the hole edge.
6. The lowering plate structure of a boxboard assembled steel structure floor board according to any one of claims 1 to 5, wherein the first support member is a plurality of L-shaped stiffeners, the L-shaped stiffeners are uniformly arranged in the length direction of the second entrance stiffeners, and both ends of the L-shaped stiffeners are welded and fixed to the flange plates of the two second entrance stiffeners, respectively.
7. The lowering plate structure of a boxboard assembled steel structure floor slab as claimed in claim 6, wherein the second supporting member is a plurality of channel steel segments, the channel steel segments are uniformly and symmetrically arranged on the two second opening stiffening ribs in the length direction of the second opening stiffening ribs, and two flanges of the channel steel segments are welded and fixed with the web of the second opening stiffening ribs.
8. The drop floor construction of boxboard assembly steel structural floor panels as claimed in claim 6, wherein the L-shaped stiffeners are arranged in one-to-one alignment with the floor stiffener and the floor stiffener cross-sectional height is greater than the L-shaped stiffener cross-sectional height.
9. The lowering plate structure of a boxboard assembled steel structure floor slab as claimed in claim 6, wherein the first and second entrance stiffeners have the same cross-sectional height and are both greater than the cross-sectional height of the L-shaped stiffener and the channel section, and the cross-sectional height of the L-shaped stiffener and the channel section is the same.
10. The manufacturing method of the plate lowering structure of the box plate assembly type steel structure floor plate is characterized by comprising the following steps of:
s10: preparing a floor plate, and forming a rectangular hole in the floor plate according to the designed position and size;
s20: welding a first L-shaped stiffening rib on the bottom surface of the floor slab, and welding a first T-shaped stiffening rib on the edge of the opening at two opposite sides of the rectangular opening;
s30: welding second T-shaped stiffening ribs on the edges of the other two opposite sides of the rectangular opening on the bottom surface of the floor panel;
s40: arranging a plurality of second L-shaped stiffening ribs in one-to-one alignment with the first L-shaped stiffening ribs in the length direction of the second T-shaped stiffening ribs, and respectively welding and fixing two ends of each second L-shaped stiffening rib on the inner side flange plates of the two second T-shaped stiffening ribs;
s50: arranging a channel steel section between two adjacent second L-shaped stiffening ribs, and welding and fixing two flanges of the channel steel section on a web plate of the second T-shaped stiffening rib;
s60: and laying a floor slab of the plate lowering area on the channel steel small section and the second L-shaped stiffening rib, and welding and fixing the periphery of the floor slab with the first T-shaped stiffening rib and the second T-shaped stiffening rib to form the plate lowering area.
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| CN108468401A (en) * | 2018-03-20 | 2018-08-31 | 昆明理工大学 | A kind of prefabricated band is put more energy into the concrete floor of light gauge cold-formed steel shape rib and its superimposed sheet of making |
| JP2018193820A (en) * | 2017-05-19 | 2018-12-06 | 株式会社竹中工務店 | Slab structure |
| CN108952147A (en) * | 2017-05-25 | 2018-12-07 | 五冶集团上海有限公司 | A kind of toilet drop panel assembly and its construction method |
| CN110042962A (en) * | 2019-05-20 | 2019-07-23 | 中建钢构有限公司 | Board connecting structure and its construction method drop |
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2020
- 2020-07-10 CN CN202010660252.2A patent/CN111549954B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000282610A (en) * | 1999-01-26 | 2000-10-10 | Takigami Steel Construction Co Ltd | Half precast floor slab and joint structure for half precast floor slab |
| CN106760099A (en) * | 2016-12-26 | 2017-05-31 | 中国电子工程设计院 | A kind of floor panels framework and floor panels |
| JP2018193820A (en) * | 2017-05-19 | 2018-12-06 | 株式会社竹中工務店 | Slab structure |
| CN108952147A (en) * | 2017-05-25 | 2018-12-07 | 五冶集团上海有限公司 | A kind of toilet drop panel assembly and its construction method |
| CN108468401A (en) * | 2018-03-20 | 2018-08-31 | 昆明理工大学 | A kind of prefabricated band is put more energy into the concrete floor of light gauge cold-formed steel shape rib and its superimposed sheet of making |
| CN110042962A (en) * | 2019-05-20 | 2019-07-23 | 中建钢构有限公司 | Board connecting structure and its construction method drop |
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